package com.itheima.intercepter;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @program: spring_base
 * @description: HandlerInterceptor
 * @author: zhanghz001
 * @create: 2020-12-03 15:17
 **/
public class MyInterceptor implements HandlerInterceptor {

    ////处理器运行之前执行
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("前置运行---------a1");
        return true;
    }

    //处理器运行之后执行
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("后置处理--------b1");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("所有拦截器的后置执行完成后,执行操作----c1");
    }
}
